Question 20

If 50 Vernier divisions are equal to 49 main scale divisions of a travelling microscope and one smallest reading of main scale is 0.5 mm, the Vernier constant of travelling microscope is:

Name: If 50 Vernier divisions are equal to 49 main scale divisions of a travelling microscope and one smallest reading of main scale is 0.5 mm, the Vernier constant of travelling microscope is:
Uploaded: 2026-06-14T11:33:22.570820+05:30
Duration: 1 min 31 s
Description: If 50 Vernier divisions are equal to 49 main scale divisions of a travelling microscope and one smallest reading of main scale is 0.5 mm, the Vernier constant of travelling microscope is:

Solution

50 Vernier divisions = 49 main scale divisions.

1 VSD = $$\frac{49}{50}$$ MSD.

Least count = 1 MSD - 1 VSD = $$1 - \frac{49}{50} = \frac{1}{50}$$ MSD = $$\frac{0.5}{50}$$ mm = $$0.01$$ mm.

The answer is Option (4): $$\boxed{0.01 \text{ mm}}$$.

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